What is the statistic used to plot on control chart for a standardized p-chart for short production runs?

\(Z_i=\frac{\hat{p}_i-\bar{p}}{\frac{\sqrt{\bar{p}(1+\bar{p})}}{n}}\)

\(Z_i=\frac{\hat{p}_i+\bar{p}}{\frac{\sqrt{\bar{p}(1+\bar{p})}}{n}}\)

\(Z_i=\frac{\hat{p}_i-\bar{p}}{\frac{\sqrt{\bar{p}(1-\bar{p})}}{n}}\)

\(Z_i=\frac{\hat{p}_i-\bar{p}}{\frac{\sqrt{\bar{p}(1+\bar{p})}}{n}}\)

\(Z_i=\frac{\hat{p}_i+\bar{p}}{\frac{\sqrt{\bar{p}(1-\bar{p})}}{n}}\)

What is the statistic used to plot on control chart for a standardize

1.	What is the statistic used to plot on control chart for a standardized p-chart for short production runs?
A.	\(Z_i=\frac{\hat{p}_i+\bar{p}}{\frac{\sqrt{\bar{p}(1+\bar{p})}}{n}}\)
B.	\(Z_i=\frac{\hat{p}_i-\bar{p}}{\frac{\sqrt{\bar{p}(1-\bar{p})}}{n}}\)
C.	\(Z_i=\frac{\hat{p}_i-\bar{p}}{\frac{\sqrt{\bar{p}(1+\bar{p})}}{n}}\)
D.	\(Z_i=\frac{\hat{p}_i+\bar{p}}{\frac{\sqrt{\bar{p}(1-\bar{p})}}{n}}\)
Answer» C. \(Z_i=\frac{\hat{p}_i-\bar{p}}{\frac{\sqrt{\bar{p}(1+\bar{p})}}{n}}\)